Pipe-coupling.



,J. H. GMELIN.

SAND AND GRAVEL SCREEN. APPLICATION FILED JAN; 28, 1909.

Patented July 12, 1910.

$55 iw M q rr ear n res.

PIPE-COUPLING.

To all whom it may concern:

Be it known that I, VVILLIAM H. Gross, a citizen of the United States,and a resident of Stonington, in the county of Hancock and State ofMaine, have invented a new and Improved Pipe-Coupling, of which thefollowing is a full, clear, and exact description.

The invention is an improvement in couplings for pipes, both flexibleand inflexible, and has in view a coupling which can be readilyassembled and disjointed without requiring other tools than the hands.

To this end the invention in general consists of two telescoping tubularmembers, with the outer member provided with an interior gasket closelyfitting around the inner member and forming a fluid-tight jointtherewith, each member having a pipe connection at its out-er end, andlatches carried by one of the members and adapted to engage with theother and hold the two mem bers assembled.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a central longitudinal section through a pipe couplingembodying my invention; Fig. 2 is a side view of the same, looking in adirection at right-angles to the showing in Fig. 1; Fig. 3 is across-section on the line 33 of Fig. 1, looking in the direction of thearrow; Fig. 4 is a perspective view of a nipple constituting one of thetelescoping members of the coupling; Fig. 5 is a similar view of theother member or pipe section of the coupling; and Fig. 6 is an innerface view of the device for securing the two telescoping members of thecoupling together, showing the latches spread apart.

The coupling essentially consists of two telescoping tubular members 10and 11, the

F outer member or pipe section having an internal annular groove inwhich a gasket 12 is seated, closely fitting around the inner member ornipple 11 and forming a watertight joint therewith. The pipe section andnipple are provided with pipe connections at their outer ends, 13 and 11 respectively, each connection being in the nature of an internalthread. The nipple 11 is constructed to extend into the pipe section 10a substantial distance and is provided with a collar 15 in-Specification of'Letters Patent.

Application filed July 13, 1909.

Patented July 12, 1910.

Serial No. 507,312.

tegrally formed to limit the insertion of the nipple, the collar beingpreferably equal in external diameter tothe outer diameter of the pipesection and having an annular groove 16 in its outer face.

The coupling will ordinarily be used to connect the two sections of ahose, 17 and 18 respectively, each section having a closelyfittinginternal nipple 19, the shank of which is corrugated to prevent the hosefrom slipping off, and the outer end portion threaded to screw intoeither the nipple or pipe section.

In the arrangement shown in Figs. 1 and 2, I have introduced a cook 20for controlling the flow of the fluid in the pipe, with one of thenipples 19 threaded into the cock, and the shank of the cock threadedinto the pipe section 13 and binding a ring 21 between them, the ringhaving outwardly-proj ecting lugs 22 at diametrically opposite points,on which are hinged latches 23. Each latch is preferably constructed ofa single piece of wire bent in the form of a loop, with the outer end ofthe loop turned inwardly and made to conform to the curvature of thereduced portion of the nipple 11 at the outside of the collar 15, asshown in dotted outline in Fig. 8, the latches being of such length asto snap into the groove 16 in the outer face of the collar and lock thetwo members of the coupling together when the said members areassembled. When it is desired to separate the two sections of the hoseor pipe, the same is easily accomplished by swinging the latches out ofengagement with the nipple and pulling the nipple and pipe section ofthe coupling directly apart. lie-connecting of the pipe sections is asreadily performed by a reversal of the operation.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent:

1. The combination in a pipe coupling, of two telescoping tubularmembers each hav ing a pipe connection at its outer end portion, a ringhaving outwardly-projecting lugs, a pipe threaded into the pipeconnection of one of said members and binding the ring to the endthereof, and wire loops hinged to the projections of the ring and havinginwardly-turned portions adapted to engage with the other member andlock the two members together.

2. The combination in a pipe coupling, of

screen overlaps the upper end of the exten- 1 screen and onto theextension 2.

sion 2 and rests upon the abutments 5, 5. The screen intermediate itsedges is sup ported by the free longitudinal edges of the ribs 9, 9.This is a feature of great importance and prevents the sagging of thescreen, thereby increasing and prolonging its utility.

In order to retain the screen against outward movement, I may providesuitable locking means, as the catches 12, pivotally secured to theinner faces. of the sides. The locking means may be of any convenientstyle, the catches shown being angular, whereby the feet 13, when thecatches are moved to locked position, engage and lie upon the screen, asshown. These catches are so arranged that they may assume the positionshown in Fig. 3, to receive and engage an extra thick screen.

The screen itself is preferably formed of rolled steel wire which isgiven a sinuous or undulating form. These wires are interlaced to formlongitudinally elongated meshes. I find that screens of this form aresuperior to the common style of screen because the sinuosity of thewires imparts a rolling movement rather than a sliding movement to thematerial to be screened, thereby causing the line particles to bequickly loosened from the coarser material. Vhere the material slidesdown the screen, a considerable portion of the line material is carriedover the screen on top of the coarser material and does not siftthrough.

I may provide suitable legs or props 1a hinged to the back of the apronor to the sides, to retain the frame and screen at any desired angle.

Portability is given the screen by providing the wheels 15, 15,journaled at the up per corners of the depressed apron, and in order torender the device compact when transporting the same from place toplace,

. I provide a suitable fastening, as a hook 16,

pivotally secured to the under face of the chute 7 and adapted to takeover one of the legs 14 to retain the latter snugly in position.

In operation, the sand or gravel is tossed or deposited on the screennear its upper end in the usual manner, the fine particles fallingthrough the meshes of the screen, whilethe coarser particles roll downoff the The screened particles falling into the channels between theribs are conducted to the lower recessed end of the apron and areshunted off onto the chute 7 which may discharge the material into awheelbarrow or onto the ground as preferred.

In order to transport the screen from place to place, the legs arebrought close to the back and the hook caught over at least one of thelegs, whereupon the operator can raise the foot of the screen. andtrundle the device to any desired position on the wheels 15.

Having thus fully disclosed my invention, what I claim as new, is

1. A screening device comprising sides and a depressed. apron, shouldersformed at the juncture of the sides and apron, catches secured to thesides above the shoulders, a sliding screen removably received andsupported on the shoulders and held in place by the catches, abutmentsat the lower ends of the shoulders projecting at approximate rightangles to the sides and extension and located at the juncture thereof,an extension projecting in the same plane with and at the lower end ofthe screen, the lower end of the apron being ofiset from the extension,

leaving an open space between the head of the extension and the foot ofthe apron to form a discharge orifice.

2. A portable metallic screen comprising sides, a plate connecting thelower ends of the sides, a depending apron connecting the upper ends ofthe sides, the apron being gradually inclined from its head to its footand terminating short of the head of the plate to leave a dischargeopening, a chute carried by the head of the plate and extendingpartially across the opening, a screen removably received between thesides, means on which the lower end of the screen rests when in inclinedposition, the plate constituting an extension of the screen, and meansfor retaining the frame at any de' sired angle.

In testimony whereof, I aflix my signature in presence of two witnesses.

JACOB HENRY GMELIN.

Witnesses:

HARLEY C. ALGER, RICHARD SURensoN.

